Hey my HDMI cable has just seemed tohave broken. STrange hey!
Had it on turned off my 360 turned it on about ten minutes later and it wouldnt work. Thought it may have been the console but it works fine with component and scart.
Tried it in the other hdmi sockets on the tv and still nto working, tried leaving it for a few hours and trying again and still not working.
So if anyone has one for cheap or virtually free it would be much appreciated, the longer the better.